Patents Assigned to 501 Ohmega Electronics, Inc.
  • Patent number: 4888574
    Abstract: An improved multilayered circuit board material and process for making that material is disclosed. The material includes an insulating material support layer, an electrical resistance material layer adhering to the support layer, and a conductive material layer adhering to the resistance material layer and in intimate contact with that layer. The electrical resistance material layer comprises electroplated nickel-phosphorous containing up to about 30% by weight of phosphorous; however, no appreciable amounts of sulfur are present within at least the top about ten atomic layers of the electrical resistance material layer. As a result, the stability of the electrical resistance material layer is significantly increased. In addition, the electroplating bath does not contain chloride salts resulting in decreased pitting in the electrical resistance material layer.
    Type: Grant
    Filed: March 28, 1988
    Date of Patent: December 19, 1989
    Assignee: 501 Ohmega Electronics, Inc.
    Inventors: James M. Rice, Bruce P. Mahler